| abstract |
Lithium silicate glass ceramics and glasses that crystallize at low temperatures and contain oxides of specific trivalent elements that are particularly suitable for dental materials are provided. Also described are lithium silicate glass ceramics and glasses containing oxides of certain trivalent elements. The lithium silicate glass ceramic of the present invention comprises a tetravalent metal oxide selected from ZrO2, TiO2, CeO2, GeO2, SnO2 and mixtures thereof, at least 12.1 wt% Li2O, and less than 0.1 wt% Of La2O3, less than 1.0 wt% K2O, and less than 2.0 wt% Na2O. [Selection figure] None |